The invention discloses a battery health degree monitoring method and an electric vehicle trunk, and relates to the technical field of battery health monitoring, and the method comprises the steps: collecting battery monomer voltage data at preset sampling moments, and carrying out the calculation to obtain an average value, a maximum value and a minimum value of the monomer voltage at each sampling moment; based on the voltage data and the average value, single voltage dispersion at each sampling moment is obtained through calculation; for each sampling moment, when the difference between the SOCVmax corresponding to the maximum value of the single voltage and the SOCVmin corresponding to the minimum value of the single voltage is not smaller than a preset value, reversely deducing the minimum value of the dispersion degree of the single voltage corresponding to the sampling moment by utilizing the maximum value of the single voltage and the minimum value of the single voltage; and comparing the single voltage dispersion at each sampling moment with the minimum value of the single voltage dispersion corresponding to the sampling moment, and determining the SOH of the lithium battery pack at the moment. A battery monitoring module with the method is arranged in a trunk, and early warning is carried out on the health state of the battery.
本发明公开了一种电池健康度监测方法及电动车后备箱,涉及电池健康监测技术领域,该方法包括:每隔预定采样时刻采集电池单体电压数据,计算得到各采样时刻下单体电压的平均值、最大值和最小值;基于电压数据和平均值计算得到各采样时刻下的单体电压离散度;对于每个采样时刻,当单体电压最大值对应的SOCVmax与单体电压最小值对应的SOCVmin之差不小于预定值时,利用单体电压最大值和单体电压最小值反推出该采样时刻对应的单体电压离散度最小值;比较各采样时刻下的单体电压离散度与该采样时刻对应的单体电压离散度最小值,确定此时锂电池组的SOH。通过在后备箱设置具备上述方法的电池监测模块,对电池健康状态做出提前预警。
Battery health degree monitoring method and electric vehicle trunk
一种电池健康度监测方法及电动车后备箱
2023-02-03
Patent
Electronic Resource
Chinese
IPC: | H01M Verfahren oder Mittel, z.B. Batterien, für die direkte Umwandlung von chemischer in elektrische Energie , PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY / B60L PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES , Antrieb von elektrisch angetriebenen Fahrzeugen / B62J Fahrrad- oder Motorradsättel oder -sitze , CYCLE SADDLES OR SEATS |